Question

Haplontic life cycle is exhibited by

• A. Fucus
• B. Ectocarpus
• C. Polysiphonia
• D. Volvox

Answer 1

The correct option is D Volvox

In Volvox, the haploid gametophytic stage is dominant and multicellular. Hence, they exhibit a haplontic life cycle.

Fucus shows diplontic life cycle, where the diploid phase is predominant than the haploid phase in the life cycle.

Ectocarpus and Polysiphonia show haplo-diplontic life cycle where both the haploid and the diploid phases are equally prevalent in their life cyles.